FR3077174B1 - SYNCHRONIZATION BETWEEN A READER AND AN OBJECT COMMUNICATING WITHOUT CONTACT WITH THE READER BY ACTIVE CHARGE MODULATION - Google Patents

SYNCHRONIZATION BETWEEN A READER AND AN OBJECT COMMUNICATING WITHOUT CONTACT WITH THE READER BY ACTIVE CHARGE MODULATION Download PDF

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Publication number
FR3077174B1
FR3077174B1 FR1850428A FR1850428A FR3077174B1 FR 3077174 B1 FR3077174 B1 FR 3077174B1 FR 1850428 A FR1850428 A FR 1850428A FR 1850428 A FR1850428 A FR 1850428A FR 3077174 B1 FR3077174 B1 FR 3077174B1
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France
Prior art keywords
reader
frequency
mac
carrier signal
ssp
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Active
Application number
FR1850428A
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French (fr)
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FR3077174A1 (en
Inventor
Marc Houdebine
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STMicroelectronics SA
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STMicroelectronics SA
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Filing date
Publication date
Application filed by STMicroelectronics SA filed Critical STMicroelectronics SA
Priority to FR1850428A priority Critical patent/FR3077174B1/en
Priority to US16/250,443 priority patent/US10841887B2/en
Priority to CN201910053591.1A priority patent/CN110061763B/en
Publication of FR3077174A1 publication Critical patent/FR3077174A1/en
Application granted granted Critical
Publication of FR3077174B1 publication Critical patent/FR3077174B1/en
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
    • H04B5/77—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for interrogation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H04W56/0015—Synchronization between nodes one node acting as a reference for the others
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
    • H04B5/24—Inductive coupling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
    • H04B5/72—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for local intradevice communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
    • H04L7/033—Speed or phase control by the received code signals, the signals containing no special synchronisation information using the transitions of the received signal to control the phase of the synchronising-signal-generating means, e.g. using a phase-locked loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
    • H04L7/033—Speed or phase control by the received code signals, the signals containing no special synchronisation information using the transitions of the received signal to control the phase of the synchronising-signal-generating means, e.g. using a phase-locked loop
    • H04L7/0331—Speed or phase control by the received code signals, the signals containing no special synchronisation information using the transitions of the received signal to control the phase of the synchronising-signal-generating means, e.g. using a phase-locked loop with a digital phase-locked loop [PLL] processing binary samples, e.g. add/subtract logic for correction of receiver clock
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Near-Field Transmission Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Power Engineering (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

Des trames de données sont transmises de l'objet vers le lecteur, chaque trame comportant des salves de signal de porteuse de modulation active de charge, appelée MAC, générées à partir d'une modulation d'une sous-porteuse par un schéma de modulation. La synchronisation entre un signal de porteuse lecteur (SH2) et le signal de porteuse MAC (SH1) comporte : avant chaque trame d'émission et entre certaines au moins des salves de signal de porteuse MAC de chaque trame d'émission, un asservissement du signal de sortie (SSP) d'un oscillateur principal commandé (OSCP) sur la phase et la fréquence du signal de porteuse lecteur (SH2) et une estimation d'un rapport de fréquences entre la fréquence du signal de sortie (SSP) et une fréquence de référence, et pendant chaque salve de porteuse MAC de chaque trame d'émission, un asservissement uniquement en fréquence du signal de sortie (SSP) sur la fréquence du signal de référence corrigée par ledit rapport estimé, ledit signal de porteuse MAC (SH1) étant issu du signal de sortie (SSP).Data frames are transmitted from the object to the reader, each frame comprising bursts of active load modulation carrier signal, called MAC, generated from modulation of a subcarrier by a modulation scheme . Synchronization between a reader carrier signal (SH2) and the MAC carrier signal (SH1) comprises: before each transmission frame and between at least some of the MAC carrier signal bursts of each transmission frame, a control of the output signal (SSP) of a controlled main oscillator (OSCP) on the phase and frequency of the reader carrier signal (SH2) and an estimate of a frequency ratio between the frequency of the output signal (SSP) and a reference frequency, and during each MAC carrier burst of each transmission frame, locking only in frequency of the output signal (SSP) to the frequency of the reference signal corrected by said estimated ratio, said MAC carrier signal (SH1 ) coming from the output signal (SSP).

FR1850428A 2018-01-19 2018-01-19 SYNCHRONIZATION BETWEEN A READER AND AN OBJECT COMMUNICATING WITHOUT CONTACT WITH THE READER BY ACTIVE CHARGE MODULATION Active FR3077174B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR1850428A FR3077174B1 (en) 2018-01-19 2018-01-19 SYNCHRONIZATION BETWEEN A READER AND AN OBJECT COMMUNICATING WITHOUT CONTACT WITH THE READER BY ACTIVE CHARGE MODULATION
US16/250,443 US10841887B2 (en) 2018-01-19 2019-01-17 Synchronization between a reader and an object in contactless communication with the reader by active load modulation
CN201910053591.1A CN110061763B (en) 2018-01-19 2019-01-21 Synchronization between a reader and an object in contactless communication with the reader by active load modulation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1850428 2018-01-19
FR1850428A FR3077174B1 (en) 2018-01-19 2018-01-19 SYNCHRONIZATION BETWEEN A READER AND AN OBJECT COMMUNICATING WITHOUT CONTACT WITH THE READER BY ACTIVE CHARGE MODULATION

Publications (2)

Publication Number Publication Date
FR3077174A1 FR3077174A1 (en) 2019-07-26
FR3077174B1 true FR3077174B1 (en) 2021-04-09

Family

ID=62167476

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1850428A Active FR3077174B1 (en) 2018-01-19 2018-01-19 SYNCHRONIZATION BETWEEN A READER AND AN OBJECT COMMUNICATING WITHOUT CONTACT WITH THE READER BY ACTIVE CHARGE MODULATION

Country Status (3)

Country Link
US (1) US10841887B2 (en)
CN (1) CN110061763B (en)
FR (1) FR3077174B1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3102625B1 (en) 2019-10-28 2021-11-12 St Microelectronics Sa NFC device emulated in card mode comprising a digital phase-locked loop, and corresponding communication method.
FR3112914B1 (en) * 2020-07-27 2023-08-11 Stmicroelectronics Razvoj Polprevodnikov D O O Managing the switching of a contactless communication device from card emulation mode to peer-to-peer mode.
EP4340237A1 (en) * 2021-06-09 2024-03-20 Huawei Technologies Co., Ltd. Near field communication chip, phase synchronization method, and electronic device
EP4106211A1 (en) * 2021-06-15 2022-12-21 Nxp B.V. Rfid transceiver with implemented phase calibration, and phase calibration method
FR3141304A1 (en) * 2022-10-21 2024-04-26 Stmicroelectronics Sa METHOD FOR CONTACTLESS COMMUNICATION BETWEEN AN OBJECT AND A READER USING ACTIVE CHARGE MODULATION

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2965082B1 (en) * 2010-09-21 2012-09-28 Inside Contactless METHOD AND DEVICE FOR INDUCTIVE COUPLING ACTIVATED LOAD MODULATION
EP3076553B1 (en) * 2015-03-30 2021-04-14 Nxp B.V. Clock synchronizer
US10687295B2 (en) * 2015-07-17 2020-06-16 Sony Corporation Communication device, communication method, and communication system with desynchronization detection
US9559833B1 (en) * 2015-09-21 2017-01-31 Broadcom Corporation Frequency synchronization for a near field communication (NFC) device
FR3044098B1 (en) 2015-11-19 2017-12-22 St Microelectronics Sa METHOD AND DEVICE FOR MEASURING THE FREQUENCY OF A SIGNAL
US10019608B2 (en) * 2015-12-09 2018-07-10 Nxp B.V. Method and device for phase calibration with active load modulation
US10396975B2 (en) * 2016-06-29 2019-08-27 Maxim Integrated Products, Inc. Clock recovery system and method for near field communication with active load modulation
FR3054760A1 (en) * 2016-07-27 2018-02-02 Stmicroelectronics Sa METHOD FOR NON-CONTACT COMMUNICATION BETWEEN AN OBJECT, FOR EXAMPLE A CARD-MOBILE MOBILE TELEPHONE, AND A CHARGING ACTIVE MODULATION DRIVE
US9806771B1 (en) * 2016-08-01 2017-10-31 Nxp B.V. Method and system for high resolution tuning of the phase for active load modulation in a NFC system
SG10201608437WA (en) * 2016-10-07 2018-05-30 Huawei Int Pte Ltd Active load modulation technique in near field communication
EP3399655B1 (en) * 2017-05-02 2020-07-01 STMicroelectronics razvoj polprevodnikov d.o.o. Synchronization method of an active load modulation clock within a transponder, and corresponding transponder
EP3429087B1 (en) * 2017-07-12 2021-08-25 STMicroelectronics razvoj polprevodnikov d.o.o. Method for synchronizing an active load modulation clock within a transponder, and corresponding transponder

Also Published As

Publication number Publication date
US10841887B2 (en) 2020-11-17
US20190230611A1 (en) 2019-07-25
FR3077174A1 (en) 2019-07-26
CN110061763B (en) 2021-08-17
CN110061763A (en) 2019-07-26

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